CN111425651B - Energy accumulator reset servo direct-drive type angular travel rapid cut-off actuating mechanism - Google Patents
Energy accumulator reset servo direct-drive type angular travel rapid cut-off actuating mechanism Download PDFInfo
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- CN111425651B CN111425651B CN202010141564.2A CN202010141564A CN111425651B CN 111425651 B CN111425651 B CN 111425651B CN 202010141564 A CN202010141564 A CN 202010141564A CN 111425651 B CN111425651 B CN 111425651B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 48
- 238000004146 energy storage Methods 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000012938 design process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 12
- 238000009825 accumulation Methods 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000004807 localization Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transmission Devices (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses an energy accumulator reset servo direct-drive type angular travel rapid cutting-off actuating mechanism, which comprises a power mechanism, a transmission system, an angular travel output assembly and an energy storage reset mechanism, wherein the power mechanism is connected with the transmission system through a transmission mechanism; the power mechanism drives the angular stroke output assembly to move through the transmission system, so that stroke output is realized; and the energy storage resetting mechanism of the energy accumulator is used for switching off the actuating mechanism when the power mechanism is out of power. The invention provides an energy accumulator reset servo direct-drive type angular travel rapid cut-off actuating mechanism, which applies the ideas of alternating current servo direct drive and hydraulic transmission to the design process of a common electric actuator, thereby simplifying the structure of the electric actuator, optimizing the use process of the electric actuator and improving the working efficiency of the electric actuator.
Description
Technical Field
The invention relates to the technical field of electric actuating mechanisms, in particular to an energy accumulator reset servo direct-drive type angular travel rapid cut-off actuating mechanism.
Background
With the rapid development of pipeline construction in China, the necessity of realizing the localization of key equipment of oil and gas pipelines is increasingly urgent. The localization of key equipment of the oil and gas pipeline is not only a national requirement, but also a requirement for reducing construction and operation costs of oil and gas transportation enterprises, and the localization of the key equipment of the oil and gas pipeline has important significance for reducing engineering cost, breaking monopoly and price barriers of foreign products, developing national industries and promoting the improvement of equipment levels of the oil and gas pipeline.
In recent years, with the increasing safety requirements in the process of automation control, the safety requirements of large-diameter valves in petroleum and petrochemical systems are urgent. The electric actuator is used as a terminal actuating mechanism of the large-caliber valve control system, a power source of the electric actuator is from an electric power system, and when the electric power system is powered off due to accidents or other reasons, the electric actuator cannot adjust the valve to a safety demand position, so that casualties and property loss are caused.
The traditional electric actuator mainly comprises a fixed shell, a motor, a speed reducer output shaft, a nut, a lead screw, a worm and gear mechanism and a control system for controlling the operation of the motor. The working principle is as follows: the motor is controlled to move through the control system, the motor drives the speed reducer to work, an output shaft of the speed reducer is connected with the lead screw, and the lead screw transmits power to the valve through the worm gear and the worm, so that the angular travel is quickly cut off. However, the conventional electric actuator has the following disadvantages: firstly, because a power source comes from an electric power system, when the electric power system is powered off due to accidents or other reasons, an electric actuator cannot move a valve to a safety demand position, and thus casualties and property loss are caused; secondly, the rotating speed of a common alternating current motor cannot be adjusted, and the rotating speed is reduced by a speed reducer, so that the structure is complex; and thirdly, the large-torque quick turn-off device used in the current market is mainly a pneumatic actuator and a hydraulic actuator. The pneumatic actuator has complicated air path laying and air leakage danger. The traditional hydraulic actuator has large maintenance workload, needs an external hydraulic system for working, needs a hydraulic station and an oil pipeline in a factory, and is expensive. In general, most of power-off reset actuators adopt a battery energy storage means to perform energy storage reset. Due to the limitation of the size and the weight, the battery energy storage reset type electric actuator generates smaller maximum torque and has poor effect on a large-flow valve. Secondly, the battery has a limited life and the harsh working environment has high requirements on the safety performance of the lithium battery.
Disclosure of Invention
In order to solve the technical problems, the invention provides an energy accumulator reset servo direct-drive type angular travel rapid cut-off executing mechanism, which applies the ideas of alternating current servo direct drive and hydraulic transmission to the design process of a common electric actuator, thereby simplifying the structure of the electric actuator, optimizing the use process of the electric actuator and improving the working efficiency of the electric actuator.
The technical scheme for solving the problems is as follows: an energy accumulator reset servo direct-drive type angular travel rapid cut-off actuating mechanism is characterized in that:
the device comprises a power mechanism, a transmission mechanism, an angular travel output assembly and an energy storage reset mechanism;
the power mechanism drives the angular stroke output assembly to move through the transmission mechanism, so that stroke output is realized;
and the energy storage resetting mechanism of the energy accumulator is used for switching off the actuating mechanism when the power mechanism is out of power.
Further, the power mechanism comprises a servo direct drive motor, and a power output end of the servo direct drive motor is an integrated worm of the servo direct drive motor.
Further, the transmission mechanism comprises a special-shaped lead screw, a step-shaped nut and a worm wheel,
the worm wheel is installed on the step nut, and the step nut cooperates with special-shaped lead screw, and the worm wheel meshes with servo direct drive motor integral type worm.
Further, the angular travel output assembly comprises a rack and an angular travel gear; one end of the special-shaped lead screw is fixedly connected with one end of the rack, and the rack is meshed with the angular travel gear.
Furthermore, the energy storage resetting mechanism of the energy accumulator comprises an energy accumulator special-shaped shell, a U-shaped shell is arranged in the energy accumulator special-shaped shell, an energy storage piston is arranged in the U-shaped shell, and the energy storage piston is fixedly connected with a one-way valve and an electromagnetic valve respectively; a pressure cavity is formed between the energy storage piston and the closed side of the U-shaped shell, an umbrella-shaped end cover is fixedly connected to the open side of the U-shaped shell, and an oil storage cavity is formed among the energy storage piston, the U-shaped shell and the umbrella-shaped end cover; and a spring is arranged between the umbrella-shaped end cover and the special-shaped shell of the energy accumulator, and the end part of the umbrella-shaped end cover is fixedly connected with the rack through an energy storage connecting piece.
Furthermore, the device also comprises a main box body, a valve body connecting seat and an angular travel valve shell; the angle travel valve casing is fixedly connected to the main box body through a valve body connecting seat, the energy accumulator special-shaped casing is fixedly connected to the valve body connecting seat through an energy accumulator end cover, the transmission mechanism is arranged in the main box body, and the angle travel output assembly is arranged in the angle travel valve casing.
Furthermore, the electromagnetic brake is fixed on the main box body through a bearing after penetrating through the special-shaped lead screw and is used for braking the special-shaped lead screw.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention designs the energy storage resetting device, if the power system is powered off due to an accident or other reasons under the condition that the valve connected with the actuating mechanism is opened, the torque in the servo motor is 0, the electromagnetic valve in the hydraulic cylinder is powered off and opened, the compressed spring in the energy accumulator is recovered, the elastic potential energy is released and converted into the hydraulic pressure to push the hydraulic cylinder and the rack, and the gear rotates reversely, so that the valve is closed quickly, and casualties and property loss are avoided; when the working environment is a dangerous environment such as a chemical plant, a nuclear power facility and the like or a power failure and other sudden accidents occur, workers do not need to enter the field to manually close the valve, and the personal safety of the workers is effectively guaranteed;
(2) the invention uses the AC servo motor, has strong overload resistance, can bear the load three times of the rated torque, and is particularly suitable for occasions with instant load fluctuation and requiring quick start; the low-speed running is stable, the step-out problem similar to that of a stepping motor cannot be caused during the low-speed running, and the method is suitable for occasions with high-speed response requirements; the motor is an alternating current servo drive, and a drive worm wheel type adopts a servo direct drive motor integrated worm, combines the conventionally adopted worm and a motor spindle into a whole, can directly drive and regulate speed, and avoids the inefficient control of the servo motor caused by a complicated speed reducing mechanism, a coupling and the like;
(3) the hydraulic system is only used in the energy storage resetting device, the structure is simple, the maintenance and the replacement are easy, and the service life is longer; the device does not need an external hydraulic system and an oil pipeline, so the manufacturing cost is low; in addition, the hydraulic spring energy accumulator utilizes a hydraulic transmission principle, and can reset the valve more quickly and stably.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial cross-sectional view of an assembly of a servo direct drive motor integrated worm, motor and worm gear employed in the present invention.
The reference numbers in the figures illustrate: 1. the energy storage device comprises a main box body, 2, an end cover, 3, a special-shaped screw rod, 4, a stepped nut, 5, a worm wheel, 6, a sleeve, 7, a servo direct drive motor integrated worm, 8, a servo direct drive motor, 9, an electromagnetic brake, 10, a bearing, 11, a valve body connecting seat, 12, a rack, 13, an angular travel gear, 14, an angular travel valve shell, 15, an energy storage end cover, 16, an energy storage special-shaped shell, 17, an energy storage piston, 18, a one-way valve, 19, an electromagnetic valve, 20, a U-shaped shell, 21, a pressure cavity, 22, an umbrella-shaped end cover, 23, an oil storage cavity, 24, a spring, 25 and an energy storage connecting piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
As shown in attached figures 1 and 2, the energy accumulator resetting servo direct-drive type angular travel rapid cut-off actuating mechanism comprises a main box body 1, the left side of the main box body 1 is fixedly connected with an end cover 2, a special-shaped lead screw 3 is installed in the end cover 2 in a matched mode, the outer side of the special-shaped lead screw 3 is fixedly connected with a step-shaped nut 4, a worm wheel 5 and a sleeve 6 used for axially limiting the worm wheel 5 are respectively installed on the step-shaped nut 4 in a matched mode, an integrated worm 7 of a servo direct-drive motor is installed on the worm wheel 5 and the servo direct-drive motor 8 in a matched mode, the servo direct-drive motor 8 is fixedly connected on the main box body 1, an electromagnetic brake 9 penetrates through the special-shaped lead screw 3 and then is fixed on the main box body 1 through a bearing 10, a valve body connecting seat 11 is fixedly connected on the left side of the main box body 1, a rack 12 inside the valve body connecting seat 11 is fixedly connected with the special-shaped lead screw 3, an angular travel gear 13 is meshed with the rack 12 and is installed on an angular travel valve shell 14 in a matched mode, the angular travel valve housing 14 is fixedly connected to the valve body attachment seat 11. An energy accumulator end cover 15 is fixedly connected to the valve body connecting seat 11, an energy accumulator special-shaped shell 16 is fixedly connected to the energy accumulator end cover 15, an energy accumulation piston 17 is fixedly connected to the interior of the energy accumulator special-shaped shell 16, a one-way valve 18 and an electromagnetic valve 19 are fixedly connected to two sides of the energy accumulation piston 17 respectively, a U-shaped shell 20 is installed in the middle of the energy accumulation piston 17 in a matched mode, a pressure cavity 21 is formed between the energy accumulation piston 17 and the U-shaped shell 20, an umbrella-shaped end cover 22 is fixedly connected to the right side of the U-shaped shell 20, and an oil storage cavity 23 is formed between the energy accumulation piston 17, the U-shaped shell 20 and the umbrella-shaped end cover 22. The umbrella-shaped end cover 22 and the energy accumulator special-shaped shell 16 are provided with a spring 24 in front, and the right side of the umbrella-shaped end cover 22 is fixedly connected with the rack 12 through an energy storage connecting piece 25.
The working principle of the invention is as follows:
(1) the invention adopts the specific principle of the angular travel rapid cut-off electric execution of the alternating current servo direct drive control as follows:
after the alternating current servo motor is electrified, a rotor, namely the servo direct drive motor integrated worm 7 rotates to drive the worm wheel 5 to rotate, power is transmitted to the stepped nut 4, and then the stepped nut 4 is driven to rotate; the screw pair converts the circular motion of the stepped nut 4 into the linear motion of the special-shaped screw rod 3, so that the rack 12 is pushed to move, and the angular stroke gear 13 is driven to rotate through the meshing of the gear and the rack, so that the angular stroke output is realized; when the angle valve reaches the working position, the motor is powered off, and meanwhile, the electromagnetic brake 9 is started, so that the servo direct-drive motor integrated worm 7 can be quickly stopped, and the accuracy of the position of the angle valve is guaranteed.
(2) The invention adopts the specific principle that the energy storage and reset of the energy accumulator realize the quick turn-off, and comprises the following steps:
when the actuator normally works, in the working stroke that the angular stroke gear 13 and the rack 12 drive the valve to be opened, the rack 12 simultaneously pushes the energy storage connecting piece 25, so that the umbrella-shaped end cover 22 and the U-shaped shell 20 are pushed to move, and the spring 24 is compressed. At the same time as the solenoid valve 19 is closed, hydraulic oil can only flow from the oil reservoir 23 to the pressure chamber 21 via the non-return valve 18. When the valve is opened to a normal working position, the one-way valve 18 and the electromagnetic valve 19 enable hydraulic oil in the pressure cavity 21 not to flow, the positions of the umbrella-shaped end cover 22 and the U-shaped shell 20 are kept unchanged, and meanwhile the spring 18 is compressed to store energy. When the valve connected with the mechanism is opened, if an accident or other reasons cause power failure of a power system, the torque in the servo motor is 0: the solenoid valve 19 in the accumulator is de-energized and opens, and hydraulic oil flows from the pressure chamber 21 to the oil chamber 23 through the solenoid valve 19, while the check valve 19 closes. At the same time, the compressed spring 24 is reset to push the umbrella-shaped end cover 22, the U-shaped shell 20 and the rack 12, so that the angular travel gear 13 rotates reversely, and the valve is closed.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent flow transformations made by using the contents of the specification and the drawings, or applied directly or indirectly to other related systems, are included in the scope of the present invention.
Claims (2)
1. The utility model provides an actuating mechanism is cut off fast to servo direct-drive formula angle stroke that energy storage ware resets which characterized in that:
the device comprises a power mechanism, a transmission mechanism, an angular travel output assembly and an energy storage reset mechanism;
the power mechanism drives the angular stroke output assembly to move through the transmission mechanism, so that stroke output is realized;
the energy storage resetting mechanism of the energy accumulator is used for switching off the actuating mechanism when the power mechanism is out of power;
the power mechanism comprises a servo direct drive motor (8), and the power output end of the servo direct drive motor (8) is a servo direct drive motor integrated worm (7);
the transmission mechanism comprises a special-shaped lead screw (3), a stepped nut (4) and a worm wheel (5),
the worm wheel (5) is arranged on the stepped nut (4), the stepped nut (4) is matched with the special-shaped lead screw (3), and the worm wheel (5) is meshed with the integrated worm (7) of the servo direct drive motor;
the energy storage resetting mechanism of the energy accumulator comprises an energy accumulator special-shaped shell (16), a U-shaped shell (20) is arranged in the energy accumulator special-shaped shell (16), an energy storage piston (17) is arranged in the U-shaped shell (20), and the energy storage piston (17) is fixedly connected with a one-way valve (18) and an electromagnetic valve (19) respectively; a pressure cavity (21) is formed between the energy storage piston (17) and the closed side of the U-shaped shell (20), an umbrella-shaped end cover (22) is fixedly connected to the open side of the U-shaped shell (20), and an oil storage cavity (23) is formed among the energy storage piston (17), the U-shaped shell (20) and the umbrella-shaped end cover (22); a spring (24) is arranged between the umbrella-shaped end cover (22) and the special-shaped shell (16) of the energy accumulator, and the end part of the umbrella-shaped end cover (22) is fixedly connected with the rack (12) through an energy storage connecting piece (25);
the special-shaped screw rod braking device is characterized by further comprising an electromagnetic brake (9), wherein the electromagnetic brake (9) penetrates through the special-shaped screw rod (3) and then is fixed on the main box body (1) through a bearing (10), and the electromagnetic brake (9) is used for braking the special-shaped screw rod (3);
the angular stroke output assembly comprises a rack (12) and an angular stroke gear (13); one end of the special-shaped lead screw (3) is fixedly connected with one end of the rack (12), and the rack (12) is meshed with the angular travel gear (13).
2. The energy accumulator resetting servo direct-drive type angular travel rapid cut-off actuating mechanism of claim 1, characterized in that:
the valve further comprises a main box body (1), a valve body connecting seat (11) and an angular travel valve shell (14);
the angular travel valve shell (14) is fixedly connected to the main box body (1) through a valve body connecting seat (11), and the energy accumulator special-shaped shell (16) is fixedly connected to the valve body connecting seat (11) through an energy accumulator end cover (15);
the transmission mechanism is arranged in the main box body (1), and the angular travel output assembly is arranged in the angular travel valve shell (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010141564.2A CN111425651B (en) | 2020-03-03 | 2020-03-03 | Energy accumulator reset servo direct-drive type angular travel rapid cut-off actuating mechanism |
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| CN202010141564.2A CN111425651B (en) | 2020-03-03 | 2020-03-03 | Energy accumulator reset servo direct-drive type angular travel rapid cut-off actuating mechanism |
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| CN112225043A (en) * | 2020-10-30 | 2021-01-15 | 长沙佐迩信息科技有限公司 | Energy-saving ventilation device for elevator |
| CN112984193B (en) * | 2021-02-23 | 2022-11-08 | 中国石化销售有限公司华南分公司 | Spring reset electric actuator |
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| CN204641375U (en) * | 2015-05-07 | 2015-09-16 | 河南省黄河防爆起重机有限公司 | With energy accumulation device for fly wheel hoisting crane hybrid power system |
| CN108825852A (en) * | 2018-08-13 | 2018-11-16 | 上海核工程研究设计院有限公司 | A kind of spring self-restoring formula electric valve executing mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3538883A1 (en) * | 1985-11-02 | 1987-05-14 | Artur Gronowski | Actuator |
| CN2531185Y (en) * | 2002-04-09 | 2003-01-15 | 沈阳东北电力调节技术研究所 | Integrated electrohydraulic control quick-shutting off valve |
| CN201100471Y (en) * | 2007-10-22 | 2008-08-13 | 扬州恒春电子有限公司 | Angle stroke electric execution machine |
| CN202834302U (en) * | 2012-10-21 | 2013-03-27 | 上海恳工自动化设备有限公司 | Redundant type hydraulic surge and electric actuating mechanism |
| CN203979596U (en) * | 2014-07-17 | 2014-12-03 | 温州合力自动化仪表有限公司 | A kind of electric hydaulic valve final controlling element |
| US9714723B1 (en) * | 2016-03-21 | 2017-07-25 | Flowinn (Shanghai) Industrial Co., Ltd. | Speed-adjustable returning device of valve actuator |
| CN206637088U (en) * | 2017-03-17 | 2017-11-14 | 保定市新华石化设备制造有限公司 | Spring reset electric device for valve |
| CN109667978B (en) * | 2018-12-24 | 2020-04-24 | 浙江敦豪斯五金工业有限公司 | Actuator of mixed type angular travel valve switch |
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2020
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204641375U (en) * | 2015-05-07 | 2015-09-16 | 河南省黄河防爆起重机有限公司 | With energy accumulation device for fly wheel hoisting crane hybrid power system |
| CN108825852A (en) * | 2018-08-13 | 2018-11-16 | 上海核工程研究设计院有限公司 | A kind of spring self-restoring formula electric valve executing mechanism |
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